Adding 'Add to Cart' button overlay to Woocommerce Product Catalog

Hi,
I would like to add an 'Add to Cart' overlay to all our products in the front page. However, I'm unable to find any information on the internet on how to do.

Basically, I want the product section of my current website
https://www.whizzbedding.com/demo/

to look like the product section of the design
http://www.baanwebsite.com/customer/whizzbedding/

Please let me know if you are able to advise.

Thanks!

Are you able to advise?